/kleuh dos"euhr euhn/ , n.
1. any or several small, transparent crustaceans of the order Cladocera, having the body covered by a bivalve shell from which the head and antennae extend.
adj.
2. Also, cladocerous /kleuh dos"euhr euhs/ . belonging or pertaining to the Cladocera.
[ 1905-10; Cladocer ( a ) ( clado- CLADO- + -cera, neut. pl. of -cerus horned; see CERO-) + -AN ]